Answer:
<u><em>Answer is below</em></u>
Step-by-step explanation:
Answer:
1.
a) all the students at the university.
2.
b) all the students enrolled in a statistics class.
3.
B) Even though the sample is random, it is not representative of the population of interest.
Answer:
sin 15° = 0.2588
Step-by-step explanation:
The half angle formula is:

sin 15°
The double of 15º is 30º. First quadrant, so the sine is positive.

Since 

sin 15° = 0.2588